Total posts : 45366
Rich said:However the fields that such certified equipment will produce after its installation by the end user in a somewhat different, or even the exact same configuration as in the test lab likely will not be the same as measured there, because the propagation environment and the distance and height of the receive antenna can vary from that used in the test lab.
I said: Not true with regards to test labs. That is why the FCC requires a Site Attenuation Test for all sites submitting data to the FCC. If the site tracks well with the theoretical prediction then the data from one site to another is repeatable within typically 2 dB.